Condensation product containing sulphur



- to substrate which comprises treating a Patented Nov. 19, 1929- Price ASSIGNOB, BY MESNE ASSIGNMENTS,

TO GENERAL WORKS, INC; 01" NEW YORK, N. Y., A CORPORATION OF nnnawaan CONDENSATIOH PRODUCT CONTAINING S UL PHUR Ito Drawing.- Appli'cation filed November 7, 1925, Serial No. 67,665, and in Germany November 14 1924:.

Resin'ous bodies obtainable by action of sulphur chloride on hydroxybenzenes have the roperty of being adsorbed from dilute alkane solutions by textilejfibres and other sub 5 strata and in this condition of fixing dyestuifs to produce dyeings fast to washing. They have the disadvantage, however, that they colour thesubstratum a dirt yellow so that the dyein obtained with acid dyestufi's w are unfavoura ly afiected in respect to their tint and clearness.

. According to the invention the resinous bodies containing sulphur. are converted by treatment with strong sul huric acid at'a 1 raised temperature an 'b eating the resin-' ous bodies thus obtaine for some time at 200240 C. in the presence of a hydroxyb'enzenein excess into compounds which are colourless when adsorbed on .tex'tile'fibres and go act as-mordants for basic dyestufis. The excess" offhydroxybenzene is eliminated by distillation-fin avacuum. The product of' condensation forms, after-cooling, a brittle mass soluble in a solution of sodium carbozo nate to a'nearly colourless solution, from 'which'it is not precipitated in the form'of resinous bodies lfheated with acids to the boiling point, but in the form of colourlessso ",Thegfollowing example -'llustrates the innous body, obtainable by the action of sul-- phurchloride on a hydroxybenzene, with strong sulphuric acid at a temperatureof about 100 (3., and raising the temperature slowly while treating the resulting material a tainable b. t e action of sulphur chloride on a hydroxy enzene,-with strong sulphuric acid at a temperature of about 100 0., and raising the temperature slowly while treating the resulting material with an excess of a hy- 55 with an excess of a hydroxybenzene until the droxybenzene until the temperature reaches about 220 0., said product being soluble in sodium carbonate'soluti'on from which it is precipitated in the form of colorless flakes by the addition of acid and heating. Intestimony whereof I V PAUL VIRCKQ ventioiil without limiting the parts being I I flig v Y 1 EwampZe 1.'To the product of reaction of 94'parts of hydro benzene with 68 parts ofof 100% strength are slowly add sulphur chloride 5 parts of sul huric acid while stir- "ring at a temperature of 90-100? 0. A livel y' reaction occurs. The temperature is slowl raisedwithin 1-2 hours to 21 0220 (3.,

uantities of hydroxybenzene'being added so t at always a surplus of itjli's'present; -The excess of hydrol sybenzeneis ftlistilledin a vacuum at'a temperature (if-240 C. The product thus-obtained dissolves in sodium carbonate to a colourless solution.

What I claim is -1 Process for the production of colorless compounds containing sulllphur and capable adsorbed by text efibers and other res'1-" aflix'my signature. I 

